US4623492A - Aerator for liquids - Google Patents

Aerator for liquids Download PDF

Info

Publication number
US4623492A
US4623492A US06/757,303 US75730385A US4623492A US 4623492 A US4623492 A US 4623492A US 75730385 A US75730385 A US 75730385A US 4623492 A US4623492 A US 4623492A
Authority
US
United States
Prior art keywords
aerator
liquid
hub
discs
disc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/757,303
Other languages
English (en)
Inventor
Konrad Pastorek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OVERHOFF GESMBH
Overhoff GmbH
Original Assignee
Overhoff GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Overhoff GmbH filed Critical Overhoff GmbH
Assigned to OVERHOFF GES.M.B.H., reassignment OVERHOFF GES.M.B.H., ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: PASTOREK, KONRAD
Application granted granted Critical
Publication of US4623492A publication Critical patent/US4623492A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/08—Aerobic processes using moving contact bodies
    • C02F3/082—Rotating biological contactors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • each immersible body consists of a plurality of axially aligned discs, which are provided at their rims with axially and peripherally extending flanges so that a chamber is defined between adjacent discs, and each flange is formed with a slot in a portion which faces downwardly as the immersible body is entering the liquid.
  • This invention relates to an aerator for liquids, particularly to an aerator for water, comprising at least one aerating basin, which contains a plurality of immersible elongate bodies, which are secured to the peripheries of wheels which revolve about an axis that is parallel to the surface of the liquid in the aerating basin so that each of the immersible bodies emerges entirely out of the liquid on one side of the aerating basin and is entirely immersed into the liquid on the other side of said basin, wherein the immersible bodies define internal cavities, which communicate with the outside of the immersible bodies through openings formed in the walls of said bodies.
  • the aerator is mainly intended for aerating contaminated water, such as sewage.
  • the immersible bodies consist of elongate tubes having any desired shape in cross-section and formed in their walls with apertures extending around two-thirds of the periphery of the tube.
  • the apertures are so arranged that they face upwardly as the tube is emerging out of the liquid and face downwardly as the tube is immersed into the liquid.
  • the active surface is increased by the provision of discs, which have been mounted in the tubes and permit the growth of microorganisms in a film of activated sludge on said discs.
  • the invention provides an aerator for liquids, particularly an aerator for water, which comprises at least one aerating basin, which contains a plurality of immersible elongate bodies, which are secured to the peripheries of wheels, which revolve about an axis which is parallel to the surface of the liquid in the aerating basin so that each of the immersible bodies emerges entirely out of the liquid on one side of the aerating basin and is entirely immersed into the liquid on the other side of that basin.
  • Each immersible body consists of a plurality of axially aligned discs, each of which is provided at its rim with a peripherally and axially extending flange so that a chamber is defined between adjacent discs, and each flange is formed with a slot in a portion which faces downwardly as the immersible body enters the liquid.
  • the portion formed with the slot preferably faces vertically downwardly as the immersible body enters the liquid.
  • the term "faces vertically downwardly” means that said portion faces in a direction which deviates from the vertical by not more than 5°.
  • the slot preferably subtends an arc of 5 to 25 degrees.
  • FIG. 1 is a transverse sectional view taken on line I--I in FIG. 2 and showing an aerator.
  • FIG. 2 is a diagrammatical side elevation showing the aerator of FIG. 1.
  • FIG. 3 is a front elevation showing a disc for use in immersible body in accordance with the invention.
  • FIG. 4 is a transverse sectional view taken on line IV--IV in FIG. 3.
  • FIGS. 5 to 7 show additional cross-sectional shapes of discs in accordance with the invention.
  • FIG. 8 is a perspective view showing the rims of two discs.
  • FIGS. 1 and 2 show an aerating basin 1, which is diagrammatically indicated in phantom.
  • a frame 2 is provided at the rim of the aerating basin 1 and carries two downwardly directed, V-shaped brackets 3, each of which is provided at its lower end with a bearing 4.
  • Two wheels 5 are rotatably mounted in the bearings 4 and are provided at their peripheries with immersible elongate bodies 6, each of which extends between the two wheels 5.
  • a drive motor 7 is secured to the frame 2 and through the intermediary of a speed reducing transmission 8 and a chain drive 9 drives the wheels 5 so that the immersible bodies 6 revolve in the aerating basin 1 in the sense indicated by the arrow A in FIG. 1 and in the upper portion of the aerating basin 1 emerge entirely out of the liquid, the surface of which is designated 10.
  • FIG. 3 is a front elevation showing an individual disc 11.
  • a plurality of such discs 11 are axially aligned to form an immersible body 6.
  • Each disc 11 is preferably circular but its contour may have any desired other configuration, e.g., that of a polygon. All discs 11 have preferably the same shape.
  • Each disc comprises a hub 12 and a web 13, which is provided at its rim with an axially and peripherally extending edge flange 14.
  • the hub 12 and the edge flange 14 are step-shaped so that each disc can be fitted on another like a cover is on a can.
  • the edge flanges 14 hold the discs 11 spaced apart so that adjacent discs 13 define chambers 15.
  • the webs 13 shown in FIG. 4 are zig-zag shaped in cross-section. Webs 13 having other cross-sectional shapes as shown in FIGS. 5 to 7.
  • the web shown in FIG. 5 has a meandering configuration and the web 13 shown in FIG. 6 is undulated.
  • the web 13 shown in FIG. 7 is provided on both sides with staggered coaxial transverse ribs 16.
  • each edge flange 14 is formed with a slot 18, which subtends an angle ⁇ of 15 to 25 degrees.
  • the bisector of that angle is designated 19 in FIGS. 1 and 3.
  • each disc 11 may be formed in its edge portion with a tongue 20 and a groove 21, as is shown in FIG. 8. Such a tongue-and-groove joint may also be provided between the hubs 12 of adjacent discs 11.
  • the largest distance between the surface 10 of the liquid and the lowermost generatrix of an immersible body is designated b. That distance b is selected to amount to one to one-and a half times the diameter of the disc so that the wheels 5 can be immersed under the liquid surface 10 to an extent which may be as large as 86% of the outside diameter of the wheel 5.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
US06/757,303 1984-07-23 1985-07-22 Aerator for liquids Expired - Fee Related US4623492A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT236984A AT380004B (de) 1984-07-23 1984-07-23 Fluessigkeits-belueftungsvorrichtung insbesondere wasser-belueftungsvorrichtung
ATA2369/84 1984-07-23

Publications (1)

Publication Number Publication Date
US4623492A true US4623492A (en) 1986-11-18

Family

ID=3533093

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/757,303 Expired - Fee Related US4623492A (en) 1984-07-23 1985-07-22 Aerator for liquids

Country Status (4)

Country Link
US (1) US4623492A (es)
EP (1) EP0169832A3 (es)
AT (1) AT380004B (es)
ES (1) ES8608452A1 (es)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5772870A (en) * 1995-06-07 1998-06-30 Norddeutsche Seekabelwerke Gmbh Tower packing block and method for manufacturing the same
US20090230037A1 (en) * 2004-12-31 2009-09-17 Staehler Theo Apparatus for Aerobic Biological Cleaning of Waste Water
EP2113489A1 (en) * 2008-04-28 2009-11-04 Dytras, S.A. Aerating rotatory device and biofilm carrier for waste water depuration
CN103319017A (zh) * 2013-07-12 2013-09-25 川源(中国)机械有限公司 一种潜水曝气机混气室镶块
US20160090316A1 (en) * 2014-09-26 2016-03-31 Westech Engineering, Inc. Methods and apparatuses for adjustable air capture and release
CN106430551A (zh) * 2016-09-08 2017-02-22 张国闽 一种旋转式复合生物型污水处理装置及方法
CN106430550A (zh) * 2016-09-08 2017-02-22 张国闽 一种小型村镇污水处理模块化一体式装置

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1899504A (en) * 1930-07-17 1933-02-28 U S Die Casting Company Air washer and humidifier
GB552457A (en) * 1941-10-14 1943-04-08 George Adams Improvements in or relating to apparatus for separating dust and like impurities from air and gases
US3510111A (en) * 1967-02-14 1970-05-05 Combustion Eng Rotating liquid-gas contactor
US3773306A (en) * 1971-07-21 1973-11-20 M Duquet Humidifying apparatus
US3827559A (en) * 1972-05-10 1974-08-06 Autotrol Corp Extended surface rotating biological contactor
US3886074A (en) * 1973-06-15 1975-05-27 Autotrol Corp Air driven rotating biological contactor apparatus
US3904525A (en) * 1973-08-23 1975-09-09 Lawrence R Rosenberg Waste treatment apparatus
US3956127A (en) * 1972-01-26 1976-05-11 European Plastic Machinery Mfg A/S Apparatus for establishing contact between a liquid and a gas
US3960991A (en) * 1973-07-25 1976-06-01 Passavant-Werke Michelbacher Hutte Rotary aerator
DE2638665A1 (de) * 1976-08-27 1978-03-02 Theo Staehler Vorrichtung zur umsetzung von in abwaessern und abwaesserschlaemmen enthaltenen fremdstoffen
US4267051A (en) * 1978-07-01 1981-05-12 Rheintechnik Weiland & Kaspar Kg Method and apparatus for aerating water
US4364826A (en) * 1981-04-13 1982-12-21 Masashi Kato Waterwheel system for aeration

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH634025A5 (de) * 1979-02-09 1983-01-14 Nibola Anstalt Vorrichtung zur biologischen abwasserreinigung.
DE2919244A1 (de) * 1979-05-12 1980-11-20 Mecafina Sa Tauchtropfkoerper fuer eine mechanisch- biologische abwasser-reinigungsanlage
DE3216210A1 (de) * 1982-04-30 1983-11-10 Crane Co., 10022 New York, N.Y. Apparat zum biologischen reinigen von abwasser

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1899504A (en) * 1930-07-17 1933-02-28 U S Die Casting Company Air washer and humidifier
GB552457A (en) * 1941-10-14 1943-04-08 George Adams Improvements in or relating to apparatus for separating dust and like impurities from air and gases
US3510111A (en) * 1967-02-14 1970-05-05 Combustion Eng Rotating liquid-gas contactor
US3773306A (en) * 1971-07-21 1973-11-20 M Duquet Humidifying apparatus
US3956127A (en) * 1972-01-26 1976-05-11 European Plastic Machinery Mfg A/S Apparatus for establishing contact between a liquid and a gas
US3827559A (en) * 1972-05-10 1974-08-06 Autotrol Corp Extended surface rotating biological contactor
US3886074A (en) * 1973-06-15 1975-05-27 Autotrol Corp Air driven rotating biological contactor apparatus
US3960991A (en) * 1973-07-25 1976-06-01 Passavant-Werke Michelbacher Hutte Rotary aerator
US3904525A (en) * 1973-08-23 1975-09-09 Lawrence R Rosenberg Waste treatment apparatus
DE2638665A1 (de) * 1976-08-27 1978-03-02 Theo Staehler Vorrichtung zur umsetzung von in abwaessern und abwaesserschlaemmen enthaltenen fremdstoffen
US4267051A (en) * 1978-07-01 1981-05-12 Rheintechnik Weiland & Kaspar Kg Method and apparatus for aerating water
US4364826A (en) * 1981-04-13 1982-12-21 Masashi Kato Waterwheel system for aeration

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5772870A (en) * 1995-06-07 1998-06-30 Norddeutsche Seekabelwerke Gmbh Tower packing block and method for manufacturing the same
US20090230037A1 (en) * 2004-12-31 2009-09-17 Staehler Theo Apparatus for Aerobic Biological Cleaning of Waste Water
US7897041B2 (en) * 2004-12-31 2011-03-01 Staehler Theo Apparatus for aerobic biological cleaning of waste water
EP2113489A1 (en) * 2008-04-28 2009-11-04 Dytras, S.A. Aerating rotatory device and biofilm carrier for waste water depuration
CN103319017A (zh) * 2013-07-12 2013-09-25 川源(中国)机械有限公司 一种潜水曝气机混气室镶块
US20160090316A1 (en) * 2014-09-26 2016-03-31 Westech Engineering, Inc. Methods and apparatuses for adjustable air capture and release
US9758404B2 (en) * 2014-09-26 2017-09-12 Westech Engineering, Inc. Methods and apparatuses for adjustable air capture and release
CN106430551A (zh) * 2016-09-08 2017-02-22 张国闽 一种旋转式复合生物型污水处理装置及方法
CN106430550A (zh) * 2016-09-08 2017-02-22 张国闽 一种小型村镇污水处理模块化一体式装置
CN106430550B (zh) * 2016-09-08 2019-08-30 张国闽 一种小型村镇污水处理模块化一体式装置
CN106430551B (zh) * 2016-09-08 2019-08-30 张国闽 一种旋转式复合生物型污水处理装置及方法

Also Published As

Publication number Publication date
ATA236984A (de) 1985-08-15
EP0169832A3 (de) 1987-03-25
ES8608452A1 (es) 1986-06-16
ES545434A0 (es) 1986-06-16
AT380004B (de) 1986-03-25
EP0169832A2 (de) 1986-01-29

Similar Documents

Publication Publication Date Title
US4122011A (en) Trickling filter media for biological filters
US3827559A (en) Extended surface rotating biological contactor
US3886074A (en) Air driven rotating biological contactor apparatus
US4364826A (en) Waterwheel system for aeration
US4623492A (en) Aerator for liquids
US4908128A (en) Composite bacteria support medium
JPS6268588A (ja) 高水没性回転型微生物接触装置
EP0080311A2 (en) Contacting device
US5395529A (en) Apparatus for the treatment of sewage
US3847811A (en) Apparatus for biologically purifying effluent
US3997443A (en) Apparatus for biological treatment of waste water
US4468326A (en) Process in microbiological purification and a device and materials therefor
US4115269A (en) Random packing materials
US5118415A (en) Oxidation ditch velocity control system
US4318810A (en) Apparatus for the conversion of pollutants contained in effluents and effluent sludges
CA1274326A (en) Hollow reactor for biological waste-water purification
DE19705896C1 (de) Festbettkörper, insbesondere für Kläranlagen und zugehöriger Bioreaktor
EP0249433B1 (en) Improvements in rotating biological contactors, and a method for their manufacture
US4692241A (en) Sewage treatment biological rotors
RU2000130709A (ru) Фильтрующий элемент, предназначенный для использования в фильтрующем устройстве
GB2075547A (en) Apparatus for cultivating micro organisms
JPS5876184A (ja) 廃水浄化装置
JPS6244167A (ja) 液体用の通気装置
JP2004524972A (ja) 生物学的流体処理デバイス
IE38480B1 (en) Improvements in or relating to waste water treatment

Legal Events

Date Code Title Description
AS Assignment

Owner name: OVERHOFF GES.M.B.H., A-2544 LEOBERSDORF, 28, SUDBA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PASTOREK, KONRAD;REEL/FRAME:004433/0904

Effective date: 19850704

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Expired due to failure to pay maintenance fee

Effective date: 19901118